Remote control system



l May 2 5, 1943.

1F. H. osBcRNE Erm,

REMOTE CONTROL SYSTEM Filed NOV. 24, 1939 8 VSheets-Sheet 1 1 INVENTRJ,

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F. H. osBpRNE Erm.- L2,319,945

REMOTE connor, SYSTEM May 25, 1943. A

Filed Nov. 24, 1939 8 Sheets-Sheet 2 INVENTORS. Fxf 0.550,?/1/5 l May25, 1943. F. H. `osBoRNE: Erm.

REMOTE CONTROL SYSTEM File@ Nov. 24, 1939 x FRED h'. saxfvf. BY faokf/V.wir.

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8 Sheets-Sheet 3 Mai 25, 1943. f. H. BORNE 'mL' 2.319.945

REMOTE CONTROL SYSTEM 8 Shets-Sheet 4 Y Filed Nov. 24,v 1939 ,4 5 Pll.

May 25, 1943. F. H. osBoRNE Erm. 2,319,945

REMOTE CONTROL SYSTEM Filed Nov. 24, 1939 8 Sheets-Sheet 6 -Pr. 1n

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REMOTE CONTRUL SYSTEM Filed Nov. .24, 1939 8 Sheets-$heet 7 1NVENTOR5-Fern h'. Oso/ewf.

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May 25, 1943. F, H. osBoRNE r-:rAL 2.319.945

l REMOTE co'NTnoL sYSTEu Filed Nov. 24, l1939 8 Sheets-Shee'rr 8Patented May 25, 1943 REMOTE CONTROL SYSTEM Fred il. Osborne, Snyder,and Theodore M. Wright, North Tonawanda, N. Y., assignors to The RudolphWurlitzer Company, Cincinnati,

Ohio, a corporation Application November 24, 1939, Serial No. 305,920 1oclaims. (ci. 194-15) This invention relates to a remote control systemparticularly adapted for the remote control of automatic musicalinstruments such as phonographs but having features applicable to otheruses as well.

One object of the invention is to provide a remote control system whichcan be used in conjunction with a manual control system at thecontrolled machine.

Another object of the invention is to provide automatic means operatedby the controlled machine for returning the parts of the remote andmanual control systems to an initial idle condition at a predeterminedtime in the operation of the controlled machine.

Another object of the 'invention is to improve the construction ofremote control transmission machine, for example, the selection. of aparticular recordtobe played. A scanning member scans the positions of.all of said elements and transmits a selection signal to the receivereach time an element is encountered which has been placed in a selectedposition. At the receiver a number of selector members are provided,each mechanically controlling one of the operations of the machine andeach corresponding to one Aof the selector elements of the transmitter.A

scanning member at the receiver is made to scan the positions of thereceiver selector elements in synchronism with the movement of thetransmitter scanning member and is operated each time a selectionsignalris received to place one of the receiver selector members inposition to 1 ated part.

will be understood from the accompanying drawings and the followingdescription and claims:

Fig. 1 is an elevational view of the face of a preferred form oftransmitter.` Fig. 2 is a side view of the same with parts in section,the sec.

tional part being taken on the line 2-2 of Fig-1. Fig. 3 is a similarview of some of the parts shown in Fig. 2 with some of said parts in adifferent position. Fig. 4 is an elevational sectional View taken on theline 4-4 of Fig. 2. Fig. 5 is a perspective view of a latch member andan associ- Fig, 6 `is a perspective view of the scanning mechanism ofthe transmitter. Fig. 7 is a side view of a portion of the same. Fig. 8is a plan view of a preferred form of receiver; Fig. 9 is an end view ofthe same. Fig. 10 is a central vertical sectional View of the receiverand manual control unit taken on the line Illl Il of Fig. 9. Fig, 11 isa sectional view of a portion of the receiver taken on the line I LofFig. 9. Fig. l2 is a sectional View taken on the line |2-I2 of Fig. 11.Fig. 13 is an elevational view of an auxiliary electric switching unitused with the invention. Fig. 14 is a diagram of electrical connectionswith certain mechanical parts diagrammatically shown.

Transmitter A preferred form of transmitter for use in the invention isshown by way of illustration in Figs.

1 to '7, inclusive. The` stationary frame of the transmitter consists offrame plates 30, 3| and securedtogether by two spacer bolts 34. Brackets35 are secured to plate 3l and may be used to fasten the transmitterwithin a wall box or cabinet.

control the operation of the machine. The receiver is arranged inconjunction with a manual selection control so that the machine may beoperated by either. When the system is to be coin controlled, coinreceivers and counters are used at the remote station and at the manualcontrol station.

Other objects and featuresof the invention A plurality of selector pins36 are slidably mounted in suitable holes in the plates 30 and 32 andeach carries a push button 31. Said push buttons project beyond the wallof the wall box or cabinet (not shown) and are accessible to anoperator. Each push button carries a number, 1 to 24, inclusive, innFig.1, corresponding tothe numberA of a given phonograph record as indicatedby the usual index. Each selector pin 36 is provided with acircumferential groove 38 (Fig. 2) iitted with a c-washer 40 normallybearing against the rear face of the frame plate 30.

`Compresslon springs 4| surround the selector pins between the plate 30and the push buttons 31 and normally hold thepins in their idle orAdjacent the rear end of eachselector pin there is acircumferential'groove 42 engageable by a latch member 43 which is shownin detail grooves 45 in their upper faces adapted to re ceive a helicaltension spring 46 which engages the grooves 'of all of said latchmembers and normally `retains the same in contact with the rearwardlyprojecting ends of. the selector pins 36. When one of said pins ispressed to the right in Fig. 2- to make a selection, the spring` 46forces the corresponding latch member into the groove 42 and retainssaid pin in the selected position against the pressure of the spring 4|.The positions of two of the pins 36 when so held is shown in Fig. 3. Y

An electric motor 41 is mounted on the frame l plate 3| and is connected.through a, gear train 48, 50 and 5| to a shaft 52 journalled in abearing 53 mounted on frame plate 32 and in a bracket 54 mounted onframe plate 3|. secured thereto a bushing 55 carrying an insulatingsleeve 56 in turn carrying three slip rings 51A, 51B and 51C. A seriesof brushes 58A, 58B and 58C mounted on a bracket 59 secured to two ofthe spacer bolts 33 engage said slip rings.

The bushing 55 also has' secured thereto a scanning arm 6| best seen inFig. 6 and carrying a pair of leaf switches 62 and 63 suitably insulatedtherefrom. At the outer end of said scanning arm there are mounted on apivot pin 64 a pair of trip members 65 and 66. The trip member 65 isprovided .with a downwardly 'extending arm 61 adapted to engage andoperate the switch 62. 'I'he trip member 66 is provided with a. similararm 68 adapted to operate the switch 63. Each of the selector pins 36carries at its inner end a reduced extension 10 lying in thepath oftravel of a pair of triggers 1| and 12 carried respectively by the tripmembers 65 and 66. When a given pin is in its non-selected P sition,said extension engages only the trigger 1| in the rotation of thescanning arm 6| (Fig. '7). When any of the pins 36 has been placed inits selected position, however, the extension reaches the path of bothof said triggers. The

I has secured thereto a pair of bushings 18 in turn insulated therefroma leaf switch 15. In the operation of the apparatus said switch must beclosed whenever any one of the pins 36 have been selected but open whennone of said pins are in the selected position. The purpose of thisoper-l ation will be later described. The leaves of said switch areshown'in Fig. 2 and one of said leaves carries aninsulation block 16engaging the face of a disc 11. Said disc has suitable openings throughwhich the pins 36 may freely pass and secured to a pair of rods 60slidably guided in the frame plates 30 and 32 (Fig. 3). The rods 8|! areprovided with heads 8| adapted to engage i between the bushings 18 andplate 32 and nor' Said shaft has the face of theframe plate to limit thetravel of said rods and the disc 11 carried thereby. A'

pair of compression springs 82 are interposed mally maintain theassembly just described in 4a left-hand position referring to Fig. 2. Inthis operated, the C-washer 4 6 carried thereby strikes the face of disc1'1, moves the same to the right as shown in Fig. 3 and thus closesswitch 15. The switch remains closed until all of the pins 36 have beenreturned .to cleared or non-selected position.

In Fig. 1 there is shown a leaf switch 83 mounted on the'face of plate30 and suitably Ainsulated therefrom. Said switch is manually loperatedby a push button 84 marked Start A leaf switch 85 is mounted on one ofthev sion 86 carrying an insulation block'81 extending downwardly intothe path of travel of the trip membery 13 carriedby the scanning arm 6|.In

scanning ar'm 6| also carries a trip member 13 shaped to engageprojections 14 on the latch members 43 andto move said latch membersoutwardly to free the,corresponding pins 36.

By means of the construction just described, `the operation of the motor41 rotates the scanning arm 6| in the direction of the arrow of Fig. 4and brings the trigger'1l on trip member 65 into engagement with all ofthe extensions 10. Each such engagement causes movement of trip member65 to close momentarily 'the switch 62. If one or more of the pins 36have been placed in selected position, the trigger 12 on trip member 66'strikes the. corresponding extension 10 .an Vappreciable time interval.after the corresponding operation of switch 62. 'I'he trip member. 13,following the triggers 1| and 12 .in their rotation, resets such of the'pins 36 as have been used in making selections.'l

Referring now to Fig. 1, there is shown mounted on one of the spacerbolts 33 and suitably the idle position of the apparatus said switch isheld open by the trip member 13. The first movement of thescanning arm6| permits the switch to close and it is not again reopened untilacomplete revolution has been made by the scanning a'rm.

VTo provide means by which the operator may correct errors of choice inthe selector pins 36, a push button 290 marked Cancel is mounted on apin 29| slidably guidedin a bushing 292 carried by the frame plate 30and in a recess in the end of shaft 52. Said pin carries a collar 293normally held in engagement with the bushing 292 by a spring 29,4interposed between said bushing and the push button 290. The pin 29|carries a disc 295 perforated for free' passage of the Receiver Figs. 8,9, 10, 11 and 12 illustrate a preferred form of the receivingapparatusfor use with the invention. A pair of frame plates 90 and `9|are secured together by spacer bolts 92 and form the principal part ofthe stationary frame of the device. IA plate 93 secured to the plate 9|by spacer bolts 94 is also a part of the stationary frame. A pluralityof selector pins'95 are slidably mounted in the plates 9| Jand 93 and'each j threads, as best seen in Fig. 11.

of said pins corresponds to one of the pins 36 ot the transmittingmechanism. Each pin is provided with a pair of arcuate grooves 96 and 91engageable .by an endless coil spring 98 seated in a peripheral groovein the plate 93. When the pins are in the normal or non-selectedposition shown in Fig. 10, the spring 98 engages the grooves 96 andyieldingly retains the same in said position. When any one of the pinshas been moved to a selected position shown in Fig. 11, the spring 98engages the groove 91 and similarly retains the pin in that position.

For moving the pins to the selected position, there is provided a hammer99 which is pivotally mounted on a pin in turn seated in ears |0| struckfrom theredges of a plate |02, the shape of which is best seen in Fig.12. Said plate has secured thereto a hub |03 inturn secured to a Y |2|are energized as shown in Fig. 9. The upbushing |04 which is journalledin a bearing |05 the'pins 95 is operated by a magnet |08 mounted y on abracket |09 secured to the plate 90. Said magnet is provided with a core||0 of magnetic material having a flange serving as a seat for acompression spring I2 interposed between said ange and the shell I3 ofthe magnet. The core I0 is secured to a false core ||4 of non-magneticmaterial, such as brass, by means of screw The false core engages a pin||5 slidably mounted in the bushing |04 and the opposite end of whichengages the hammer 99. The hammer 99 is normallyretained in the positionshown in Fig. 10 by a torsion spring ||6 surrounding the pin |00 andanchoredat one end to one of the ears |0| and having its other endengaging the face of the hammer. At the same time,`the spring |I2normally holds the core ||0 in the position shown in Fig. 10. Amomentary actuation of the magnet |08 draws the core ||0 to the rightlagainst the action of the spring I l2 and causes the pin i|5\to strikethe hammer 99 and t6 force said hammer against the selector pin 95 withwhich, said hammer-is then in register. When said magnet is againdeenergized the parts resume the position shown in Fig. 10.

An electric switch ||8 is mounted on, and suitably insulated from abracket ||9 secured to the plate 90 (Fig. 10). One of the leaves of saids witch carries an insulation block |20 engageable by the core ||0 andnormally holding said switch ward movement of the armature |23 islimited -by an adjustable stop |3| secured to the plate 90 and thedownward movement thereof is limited by a similar stop |32. A pin |33engages thedog |28 when the same is in its lower position' and holdsthe` nose |30 out of engagement with the teeth of the ratchet |01. Bymeans of this construction the ratchet |01 and the hammer 99 are moved adistance corresponding to one ratchet tooth each time the magnets |2|are energized. The teeth of the ratchet are so spaced that each suchmovement carries the hammer 99 from one of the pins 95 to the next.

A torsion spring |34 has one end anchored to the,bearing |05 and theopposite end engaging a pin |35 on the back of the ratchet wheel 01.Said spring normally urges said ratchet in the clockwise direction ofFig. 9, but movement in that direction is normally prevented by a pawl|36 pivotally mounted on a pin |31 secured to the plate 90. A tensionspring |38 maintains said pawl in engagement with the ratchet |01. Anelectromagnet |39 is mounted on a bracket |40 .secured to the plate 90and when energized attracts an armature |4| secured to the pawl |36 andremoves the pawl from engagement with the ratchet. The subsequent actionof spring |34 rotates the ratchet and hammer in thc counterclockwisedirection until a pin |42 carried by the` plate |02 strikes a stop |43secured to the rear face `of the plate 90. When this occurs, the hammer99 is in its normal idle position .approximately half way between thepins 95 corresponding to the transmitter buttons No. l and No. 24. Inthis position the ratchet teeth are so placed in relation to the dog |28th'at the first move-- -ment of said dog carries the hammer 99 only tothe position of the pin 95 corresponding to the transmitter pin No, l.

Apparatus for resetting all of the selector pins 95, or such of saidpins as may be in the se-- lected position is operated by an`electromagnet in the open position when the parts are in the positionshown in Fig. 10. At each operation of the magnet |08, the pressure ofcore l0 o`n switch ||8 is released and the switch is allowed to beclosed for a purpose to be described hereinafter.

Mechanism for revolving the hammer 99 to register the same with thesuccessive pins 95 is operated by a pair of magnets |2| connected inseries positioned beneath the magnets |2| and is drawn |50 mounted onthe plate 90 and provided with a core |5|. Said core is threadedlyengaged with a stem |52 which is held in adjusted position with relationtothe core by a set screw |53. The stem |52 has a pin-and-slotconnection' |54 with a` yoke lever |55 pivotally mounted at |56 on theplate 9|. The opposite end of said lever is in the shape of a fork |51engaging a bushing |58 which is slidably mounted on a boss |59 extendingfrom the plate '93. The bushing |58 has secured thereto a disc |60suitably perforated for free passage of thev pins and-adapted to engageC-washers |6| carried in suitable grooves in said pins. A spiralcompresslonspring |62 is interposed between the disc |60 and the iace ofplate 93 and normally retains' the parts in the position shown in Fi'g.11. By means of this construction, a momentary energization cf themagnet |50 draws the core |5| to the right in Fig. 11 and moves the disc60 to engage the C-washers |6| of any of the pins 9 5 which have beenplaced in the selected position. Said pins are thus returned to their`idle non-selected position` Manual selector shown in detail in Fig. 10.Said d evice is mounted on the plates 90 and 9| and includes astationary disc secured to the plate 9| ,by spacer bolts |1|. Selectorpins |12 are slidably mounted on the disc |10 and plate 9| and areprovided at their outer ends with push buttons |13 extending to aposition accessible to an operator. The pins |12 are provided withannular grooves |14 and |15 engaged by a spring |15 to maintain the pinsin their idle and selected positions respectively. A magnet |11 operatesthrough a core |18, a stem |19, yoke lever |80, bushing |8| and disc |82to reset the pins |12 in the same manner that pins 95 are reset by themagnet |50. The stem |19 is held in adjusted position with respect tothe core |18 by a lock nut |83 and has a portion extending through saidcore and carrying a push button |84 acsessible to an operator for manualcancellation.

Mechanical connections to phonograph The mechanical connections by meansof which `pins 95 or |12 control the selection of records in thephonograph is preferably similar'to that described in Wilcox Patent No.2,002,236` and positions of the pin's 95 as the shaft |9| is rotated.

A compression-spring |94. within the boss |59 normally retains the shaftin the position shown in Fig; 10. A gear |95. is mounted on the outervend of said shaft'.

The plate 9| also carries a bridge |96 in which is journalled a shaft|91 also journalled in a boss |98 on thev disc |10. The shaft |91carries a scanning arm |99 having an inturned portion 200 adapted toscan the positions of the pins |13. A compression spring 20| within theboss |98 holds the parts in the position of Fig. 10. A 'gear 202 issecured to the shaft-|91. The gears |95 and 202 are engaged by a pinion203 mounted on a shaft 204 which is rotated in th movement of therecord-selecting mechanism of the phonograph -until one of the scanningarms |92 or |99 strikes a pin 95 or |12 which has been placed in theselected position. When this occurs the record-selecting mechanism ofthe phonograph is stopped in position to select the record correspondingto the pin engaged. The phonograph mechanism then operates through acycle in which the record is placedin playing position, is

played and removed from playing position.. At a predetermined time inthis cycle of operations, a rod 205 is moved to the right 'in Fig. 10 bysuitable mechanical connection with the4 phonograph mechanism. Said rodhas a pin-andslot connection 20S with av pair of levers 281 and 208which are pivotally mounted on pivot screws 209 and 2|0 carriedby-suitable stationary parts of the machine, Said levers engage the hubsof gears 202 and |95 respectively and when moved by the rod 205 theypress the shafts |9| and |91 to the left. This movement brings la face2|| of the scanning arm |99 or a face 2|2 of the scanning arm |92against the selector pin which has been used to stop the recordselecting mechanism and returns said pin to its idle position.

Auxiliary devices Auxiliary devices for use with the transmitte andreceiver already described include a remote positioned at the remotestation near the transmitter or may be housed in the same cabinet orwall box therewith. The device includes a ratchet wheel 2|5 which islurged in a counterclockwise direction by a torsion-spring 2|0 and isnormally held from rotation in that direction by an escapement 2|1. Adog 2|8 attached to a well known form of coin slide 2 I9 engages theteeth of the ratchet and moves the same one notch in the clockwisedirection each time a coin is inserted in the slide and the slide ispressed home. VSimilar slides receiving coins of larger denomination maybe added l,and mayoperate with ratchet wheels on the same shaft with.wheel 2|5 to move the lsame through proportionately greater distances asdescribed in said co-pending applications.

An electromagnet 220, when energized, attracts the tail of theescapement 2|1 and permits the spring 2|6 to rotate the ratchet onenotchin the opposite direction. An insulated pin 22| carried by the ratchetwheel 2|5 operates a pair of leaf switches 222 and 223. Normally theswitches are open as shown in Fig. 14 when no coins have been receivedwhich have not been checked off by operation of the magnet 220. When oneor more coins have been received and the ratchet has been rotated in theclockwise direction, pin 22| frees the switches and permits them toclose. The switches remain closed until the magnet 220 -has beenenergized a number of times proportionate to the value of coins whichhave been deposited.

Another auxiliary device shown diagrammatically and indicated by name inFig. 14 is the local counter. In this device there is provided a ratchetwheel 225 carrying a pin 228 operating a pair of switches 221 and 228.The switch 221 is the main switch for the phonograph operation and isnormally open when the parts are in their idle position. The switch 228is normally closed. The ratchet may be rotated in the clockwisedirection by a dog 229 carried by an armature 230 vof an electromagnet23| and when so rotated, the

switch 221 is closed and the 'switch 218 is opened. Return movement ofthe ratchet is accomplished by a torsion spring 232 when an escapement223 is operated by a checkoi magnet 234. This device is well known inthe automatic phonograph art and is subject to considerable variation indetail. In many installations, the escapement is operated mechanicallyby movement of parts of the record changing mechanism. However,electrical oper-- Y ation is shown herein for the sake of simplicity ofdescription.

Another auxiliary device is shown in detail in Fig. 13 anddiagrammatically in Fig. 14. 'I'his deviceV includes a base 235 carryingan electromagnet 236 and a dashpot 231. A-lever 238 is pivotally mountedatl on the base and carries 251, 258 and 259.

a dog 240 adapted to engage and actuate a leaf switch 24|. The lever 238is connected tothe plunger of the magnet by a link 242 and to theplunger 243 of the dashpot by a link 244. A piston 245 is carried by theplunger 243 and is urged to the left by a compression spring 246. A ballcheck valve 241 mounted in the end of the dashpot permits rapid inow ofair as the piston moves to the right but isclosed as the piston moves tothe left. A needle valve 248 cooperating with a port 249 restricts theoutflow of air as the piston moves to the left. An opening 250 in thewall of the dashpot prevents increase of pressure on the reverse side ofthe piston. 'I'he dog 240 is pivoted to the lever 239 by a pin 25| andis held against a stop pin'252 by a tension spring 253. y

In the operation of this device an actuation of the magnet 236 moves theparts to the right and may do so at a rapid rate since the ball checkvalve 241 permits rapid inflow of air -to the dashpot.

In this movement the dog 240 strikes the switch 24| but is turned on itspivotal mounting and thus fails to actuate the switch. ,When the magnet236 is deenergized, the spring 246 tends to return the parts to theleft. The speed of return -is controlled by the adjustment of the needlevalve 248 and isso adjusted that theY dog 241| will not reach the switch24| during the period of time that the scanning arm 6| of thetransmitter is moving from the position of one of the selector pins 36to the next. Successive actuations of the magnet 236 occurring with thisfrequency therefore prevent operation of the switch 24|. A cessation ofsuch actuations, however, permits the spring 246 to return the parts tothe limit of their left-hand movement and in so doing to engage the dog248 with the switch 24| and close the same for an appreciable period. Atthe end of said movement, the switch is again open as shown in Fig. 14.

The phonograph electrical parts Only so much of the electrical parts ofthe phonograph are shown in Fig. 14 as are necessary changing mechanismordinarily runs through a cycle of operations for each record played.Dur ing this cyc1e the several electric circuits are made and broken atappropriate intervals by cams or other mechanical means. In the presentinstance there are illustrated three switches 254, 255 and 256 operatedrespectively by cams Each of said cams may be assumed to make onecomplete revolution for each record-changing cyc1e. There is also s'howna motor 269 which may be assumed to supply motive power for therecord-selecting mechanism, for the record-changing mechanism and forthe rotation of the turntable in playing the record. The electricalmechanism shown is selected for simplicity of description.` Theconnections to other forms of phonographs using more complicatedclrcuits will be obvious. Y

Wiring In the wiring diagram of Fig. 14 there are illustrated thelectrical partsv already described and certain of the mechanical partsassociated therewith. In addition, there are shown a pair of power mains26| and 262 which may be connected to any suitable source of current atthe remote station and serve for local power supply. Preferably, theusual 110 volts, 60 cycle alternatphonograph. At the phonograph a pairofpower mains 210 and 21| are connected to any suitable source of currentand supply power for the circuits of the motor 260. A transformer 212has its primary windings connected to the power mains 210 and 21| andsupplies suitable low voltage current vto a pair of distributoryconductors 213 and 214. The remainder of the wiring' can best bedescribed in connection with a resume of the operation of the system asa whole. In this description, conductors lwill be referred to byreference number only in describing the circuits of which they form apart.

I Operation In thc normal idle position of the apparatus, all of theelectrical parts are in the position shown in Fig. 14 and no crcuits arecomplete. The trip member 13 is in engagement with the insulation block81 and retains switch 85 open. The trip members 65 and 66 are inpositionV with their triggers between the two selector pins 36 carryingpush buttons Nos. 1 and 24 and all of the selector pins are in the idleor non-selected position. At the receiver, all of thepins are in thenon-selected position andthehammer 99 is in position midway between thetwo pins 95 corresponding to push `buttons Nos. 1 and 24. Said hammer isheld in that position by the engagement of the pin |42 and stop |43. ualselector pins I 12 are in non-selected position.

Let it be assumed that the operator at the remote station Wishes to`choose iive selections and to deposit coins of an appropriate value. Hemay first press the ve selector push buttons 31 or he Y may rst depositthe coins as desired. The operation ofthe push buttons places the chosenpins 36 with their extensions 'lll in the path of travel of the triggerof trip member 66. The receipt of the coins moves the ratchet 2|5 vesteps in the clockwise directionand closes switches 222 and 223. Y Theoperation of the selector pins also closes switch 15. The completion ofboth of these operations establishes a circuit for a signal lamp 215,(power main 26|, lamp 215, switch 15, 216, switch 222, power main 262).The operation of switches 222 and 223 have no other immediate result.The signal lamp indicates that selections have been made and paid forbut not yet transmitted to the receiver.

TheY operator next presses the start push button 84 and closes switch83, completing a circuit' for the transmitter motor 41 (power main 26|,motor 41, switch 83, 216, switch 222, power main The rst movement of thetransmitter motor carries the trigger member 13 past the insulationblock 81 and permits switch 65 to close. The operation of said switchcompletes a hold-in circuit for the motor 41 (power main 26|, motor 41,switch 85, power main 262). This circuit re-A mains completed andcontinues the operation of the motor until the scanning arm 6| has madeone complete revolution irrespective of the operation of switch 222 orthe opening of the starting switch 83 when the operator withdraws hisnger from the start push button 64.

In vthe rotation of the scanning arm 6| the The mantrigger 65 strikeseach-of the vextensions 16 of the selector pins 36. At each suchengagement the. switch 62 is momentarily closed and a circuit ismomentarily completed for the magnet |2| (transformer 263, 264, switch223, 261, magnet,

|2|, 269, brush 58B, slip ring 51B, switch 62, slip ring 51A, brush 58A,265, transformer 263). The first actuation of the magnet |2| lmoves thehammer 99 from its initial position into register with the pin 95corresponding to push button No. 1 and each succeeding actuation movesthe hammer to a succeeding pin 95. Thus the hammer 99 keeps step withthe movement of the scanning' arm 6| in response to indexing signalstransmitted to the magnet |2| by each actuation of switch 62.

The magnet 236 is connected in parallel with magnetv |2| by branchesofthe conductors 261 and 269 and -is thus repeatedly energized in syn-lchronism therewith. The rst actuation of said magnet moves the dog 246to its right-hand position without actuating switch 24|. Succeedingactuations take place too rapidly to permit said dog to return farenough to actuate said switch.

During the scanning operation' of the arm 6|,`

the trigger 66 strikes the extension 16 oi each of the pins 36 whichhave been placed in selected position. At the time of each suchengagement the hammer 99 is in register with the pin 95' correspondingto the selected pin 36, and each such engagement momentarily closes theswitch 63 and completes a circuit for a selection signal in response towhich said hammer is operated (transformer 263, 264, switch 223, 261,magnet |68, 268, brush 58C, slip ring 51C, switch 63, slip IJ ring 51A,brush 58A, 265, transformer 263). Each actuation of magnet |63 by meansof this Each operation ofthe hammer 98 by the magnet |68 is accompaniedby a momentary closing of the switch ||8.- Each operation of said switchcompletes a circuit for the magnet 23| of the local' counter(transformer 212, 218, switch ||8, 218, magnet 23|, 214, transformer212). Each such actuation sets up a coin value inthe local counter andthe rst of said actuations permits the main switch 221 to be closed andthe switch 228 to be opened. Branches of the conductors -213 and 218also lead to a local coin receiver at the phonograph which may be of awell known type adapted to make contact between said conductors eachtime acoin of a certain value is inserted and to makemultiple contactsfor coins of larger value. Thus the local counter may be operated eitherby remote control orby the local coin receiver.

'I'he closing of the main switch 221 completes a circuit to st'art theoperation of the phonograph motor 266 (216, switch 221, 219, motor 266,21|). The first operation of the motor turns the cam 259 to close thecarry-over switch 256 and to complete the usual carry-over circuit forthe motor in parallel with the circuit just described. The carry-overcircuit remains closed until the phonograph parts have made a completecycle so that the completion of each cycle is independent of the mainswitch 221. At any convenient time in the cycle of operations after the.closing of the carry-over switch 256, switch 255 is momentarily closedand completes a circuit for the check-off magnet 234 of the localcounter (transformer 212, 213, switch 255, 286, magnet circuit, operatesthe hammer 99 to place the appropriate selector pin 95 Jin the selectedposition.

Branches of the conductors'261 and 268 also lead to the check-off magnet226 in the remote coin counter. Said magnet is, therefore, actuated eachtime that magnet 4|68 is actuated and operates the coin counter to checkoff one coin value. In 'the assumed example, when five such actuationshave taken place, the ratchet 2|5 returns to normal position and-opensswitches 222 and 223. The opening of switch 222 extinguishes the lamp215 but does not stop the motor 41 since the operation of said motorcontinues by the circuit through switch 86. The opening of switch 223however prevents further actuations of 'magnets |2|, 236, |68 and 226since the circuits of all of said magnets pass through said switch. Thusno selections are transmitted which have not been paid for, eventhough-more of the push buttons 31 have been pressed than are warrantedby the value ,of the coins deposited. The rotation of motor 41 continuesto the end of a complete revolution of arm 6| during which all of thepins 36 are returned Ato initial position by trip member 13 whether theselections corresponding thereto have been transmitted or not.

The opening of switch 223, when the last selection signal istransmitted, prevents further 234, 214, transformer 212). Each suchoperation checks oi a coin value on the local counter and moves the pin226 toward the main switch 221. When the last coin value is checked oil?during the cycle for the last record paid for, the main switch 221 isopened and switch 218 is closed with no immediate result.

At any convenient time in the cycle of phonograph operation, after theoperation of switch 255 and before the carry-over switch 256 is againopened, switch 254 is momentarily closed. As long` as there areselections paid for and yet to be played the operation of switch 254 hasno effect since it is in series with switch 228 and the latter switch isopen as long as the main switch 221 is closed. During the cycle for theplaying of the last record selected and paid for, the opactuation ofmagnet 236. The slow return` movement of the dog 246 Aunder control of'the dashpot 231 closes switch 24|K and completes a circuit for magnet|39, (transformer 212, 213, switch 24 ,211,magnet |39, 214, transformer212) Said circuit maintains the magnet |39 in an energized conditionsufficiently long for the spring |34 `to return the hammer 99 to itsinitial p'osition. h

eration of switch 254 takes place after the main switch 221 has beenopened and the switch 228 closed and while the motor is running on thecarry-over circuit through switch 256. Under these conditions, a circuitis completed for actuation of the magnets |56 andA |11 (transformer 212,213, switch 228, 28|, switch 254, 282, magnets |56 and |11, 214,transformer 212). The

operation of the magnet |56 resets al1 of the selector pins 95 remainingin selected position and the operation of magnet |11 similarly resetsall of the remaining manual selector pins |12.

In the type of mechanical vconnections to the phonograph describedherein, the selected pins 95 and |12 are individually reset as theselections are played by the phonograph, still it is possible that someof thegmanual selector pins |12 may havevbeen inadvertently placed inselected position and no corresponding payment made. In that case, someof the selections played may have been controlled by the operation ofthese manual selector pins, leaving a corresponding number of the pins86 in the selected poistion. 'I'he operation of magnets |56 and |11therefore inv returning all of said pins to idle condition.

After the opening of the main switch 211 during the cycle of operationsof the last record paid for, the operation of motor 260 continues untilthe cycle has been completed, whereupon cam 259 opens` carry-over switch256 and stops the motor. original. positions. Further operations eitherby remote control or by manual control may be initiated at any timeafter completion of the scanning movement of member 6 I.

The invention has been described in a preferred form applied toaparticular type of controlled machine. Variations in the details thereofand the mode of application to other types of machines will be obvious tthose skilled in the art. Coin control may be omitted in many cases andthe changes in wiring for such omission will be apparent.

The invention claimed is:

1. In selective control apparatus for electrical musical instruments andthe like, a plurality of selector members manually movable from anonselected to a selected position, said members being biased towardnon-selected position, a latch associated with each of said members andadapted to retain the same in selected position, and a scanning membervmovable to engage said latches successively to trip the same and permitthe associated selector members to return to nonselected positions.

2.7In selective control apparatus for electrical musical instruments andthe like, a plurality of selector members manually movable from anonselected to a selected position, said members being biased towardnon-selected position, a latch associated with each of said members andadapted to retain the same in selected position, and manually operatedcancelling mechanism adapted simultaneously to trip all of said latchesto permit said selector members to return to nons`elected position.

3. In remote control apparatus for selectively operated machines, atransmitter including .a plurality of selectively operable selectormembers movable from non-selected to selected positions, a rotatablescanning arm, an electric switch mounted on said arm, and a switchoperating member carried by said arm and adapted to engage each of theselected selector members and to actuate said switch in response to saidengagement.

4. In remote control apparatus for selectively operated machines havinga local receiver adapted to operate said machine in response to indexingand selecting signals electrically received, the

,combination of a-plurality of remotely positioned manually operatedselector members movable from non-selected to selected positions, arotatable scanning arm, an electric switch mounted on said arm andelectrically connected to said receiver to give said indexing signalswhen actuated, a. switch operating member carried on said arm andengageable with each of said selector members whether selected or notand actuating said switch when so engaged, a second electric switchmounted on said arm and electrically connected to said receiver fogivingsaid selection The parts have now returned to their signals, and asecond switch operating member on said arm engageable only with theselected selector membersA and actuating said second switch when soengaged.

5. In a remote control apparatus for a selective record playing musicalinstrument or the like having a receiver adapted to control theselective operation of said instrument, a remotely positioned motor, andan impulse operated register device and associated circuits controllingthe operation of said motor, the sub-combination of a plurality ofselectively operable remote selector members movable to non-selected andto selected positions, a scanning member movable progressively over theselected positions of said selector members during a cycle of operation,said scanning member being moved by operation of said motor, anelectrical circuit, said circuit -being controlled by the engagement ofsaid scanning member with the selected selector members to transmitcontrolling signals to said receiver, a, starting circuit for said motorconsaid register device each time a controlling signal is transmitted,and electrical means operated by the register device and controllingsaid rstmentioned circuit to prevent transmission of signals-thereinafter the last of such registrations has been checked off.

6. In a coin controlled remote control apparatus for a selective recordplaying musical instrument or the like having a receiver adapted tocontrol the selective operation of said instrument, a remotelypositioned motor, and an impulse operated register device and associatedcircuits controlling operation of said motor, the sub-combination of aplurality of selectively operable remote selector members movable tononselected and to selected positions, a scanning member movableprogressively over the selected positions of vsaid selector membersduring a cycle of operation, said scanning member being moved by theoperation of said motor, an electric circuit, said circuit beingcontrolled by the engagement of said scanning member with the selectedselector members to transmit controlling signals to said receiver, acoin counter adapted to register the value of coins received in terms ofrecords to be played, a starting circuit for said motor conditioned foroperation by the said coin counter whenone or more coins have beenreceived, a manually controlled switch in said starting circuit adaptedto complete the same to start the motor when so conditioned, and acarryover circuit for said motor including a switch closed upon theinitial movement of said motor and adapted to Acontinue operation ofsaid motor until a complete cycle of said scanning members is completed.

7. In a remote control apparatus for selectivo musical instruments orthe like, having a remote transmitter, `a local receiver including aregister device, electrical connections between said transmitter andreceiver adapted to transmit indexing signals and selection signals fromsaid mitter selector members movable to non-selected and `to selectedpositions, corresponding receiver selector members cach adapted whenplaced in the selected position to control an operation of saidinstrument, a receiver scanning member movable progressively in responseto said indexing signals' to regstersuccessively with said receiverselector members, a transmitter scanningr member movable progressivelyover the selected positions of said 'transmitter selector members duringa cycle of operation, electrical means controlled by the movement of thetransmitter scanning member to send said indexing signals atpredetermined intervals to move the receiving scanning mem-ber insynchronism therewith and to send said selection signals when thetransmitter scanning member engages a selected selector member, meansfor limiting the number of selection signals which may be transmittedand interrupting transmission of the indexing signals after the lastselection signal has been transmitted, and means operated automaticallyupon cessation of said indexing signals for returning the receiverscanning member to its initial position.

8. In a remote control apparatus for a selective record playing musicalinstrument or the like having an impulse operated register device, alocal receiver lprovided with a plurality of selector members eachadapted when placed in the selected position to control an operation ofsaid instrument. a scanning member movable progressively. overl theselected positions of said selector members during a cycle of operationin response toindexing signals and movable in respense to a'selectionsignal to place in selected position the selector member with which itis then in registry, a remote transmitter electrically connected to saidreceiver operable to transmit said indexing signals at regular intervalsand operable to transmit said selection signals in accordancewithselections manually made, means controlled by said register device4operable to limit the number of selection signals which may betransmitted in accordance withirnpulses received thereby and forinterruptingtransmission of indexing signals after the last selectionsignal has been transmitted, and means operated member to said receiver,a pluralityrof transautomatically upon cessation of said indexingsignals for returning said scanning member to its initial position.

9. In a remote control apparatus for a selective record playingmusical'instrument or the Ylike having an impulse operated registerdevice.'

a plurality of remotely controlled selector members each Aadapted whenplaced in a selected position to determine a selection to be renderedduring one cycle of operation of said instrument,

a plurality of corresponding manually operated locally controlledselector members similarly controlling the operation of `saidinstrument, means v lective record playing musical instrument or thelike having an impulse operated register device, a plurality of remotely.controlled selector members each adapted when placed in a selectedposition to determine a selection to be rendered during one cycle ofoperation of said instrument, a plurality of corresponding manuallyoperated locally controlled selector members similarly controlling theoperation of said instrument, means controlled by said register deviceoperative to determine the number of selections to be successivelyrendered as a group, electrically operated means operable to return allof saidremotely controlled and manually operated'selector members to anon-selected position, a

FRED H, OSBORNE. THEODORE M. WRIGHT.

